It is not the smartest decision. Can be a serious strategic error.
Pundits wondered about the future of Apple after Steve Jobs is gone. Now we know.
Why reinvent the wheel?
Does Apple maps have Street-View?
Will it be comprehensive enough for countries outside the USA? Can the level of zoom-in detail match Google maps?
Is Apple planning to make iPhone/iPad users PAY $$$ for the use of its maps, in due time?
Restaurants, shops and other places that want to be shown on the Apple maps may need to pay Apple money.
In this way, Apple can earn money from advertisers as well. A short-sighted mistake.